https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84183
David Malcolm <dmalcolm at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dmalcolm at gcc dot gnu.org --- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Thanks for filing this bug report. Looks like it's failing in "s-selftest", running the selftests within cc1. These ought to be a no-op for a release build, so presumably it's just happening to fail the first time that the newly built cc1 is run. Line 257 of alloc-pool.h is: gcc_checking_assert (m_name); within base_pool_allocator <TBlockAllocator>::initialize (), so presumably m_name is NULL ...somehow.